Community Water System · PWS MO4024432
Oregon County PWSD 1
Operator location Alton, Missouri - 34% of 56 violations are health-based (upper-third health share (> 23%)); groundwater source; 900 served per SDWIS.
- 900
- People served (this PWS)
- 56
- EPA violations (this PWS)
- 19
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Oregon County PWSD 1 standing, mid SDWIS violation third
34% of 56 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 34% is upper-third health share (> 23%). Population rank #21,077 of 29,740 among systems serving 500+.
The verdict
Oregon County PWSD 1 lands in the middle third by violation volume (56), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (900; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 34% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #21,077 of 29,740
- Population · /systems
- #518 of 738
- Population · MO
- 56
- Total EPA violations on record
- 34%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 320
- County
- Oregon
- School/Daycare
- No
- MCL Violations
- 19
- Monitoring Violations
- 33
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 19 | 2015 |
| TTHM | MR | 4 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2024 |
| Coliform (TCR) | MR | 4 | 1997 |
| 1,1,2-Trichloroethane | MR | 1 | 2020 |
| Toluene | MR | 1 | 2020 |
| CHLOROBENZENE | MR | 1 | 2020 |
| Carbon tetrachloride | MR | 1 | 2020 |
| trans-1,2-Dichloroethylene | MR | 1 | 2020 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2020 |
| 1,2-Dichloropropane | MR | 1 | 2020 |
| DICHLOROMETHANE | MR | 1 | 2020 |
| Xylenes, Total | MR | 1 | 2020 |
| Ethylbenzene | MR | 1 | 2020 |
| 1,2-Dichloroethane | MR | 1 | 2020 |
| Tetrachloroethylene | MR | 1 | 2020 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| Benzene | MR | 1 | 2020 |
| cis-1,2-Dichloroethylene | MR | 1 | 2020 |
| Styrene | MR | 1 | 2020 |
| Consumer Confidence Rule | Other | 1 | 2020 |
| 1,1,1-Trichloroethane | MR | 1 | 2020 |
| p-Dichlorobenzene | MR | 1 | 2020 |
| Vinyl chloride | MR | 1 | 2020 |
| Trichloroethylene | MR | 1 | 2020 |
| Public Notice | Other | 1 | 2015 |
| 1,1-Dichloroethylene | MR | 1 | 2020 |
| o-Dichlorobenzene | MR | 1 | 2020 |
Violation Count vs. the National Corpus
Oregon County PWSD 1 has 56 recorded EPA violations, 60% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 40% carry more. 34% of this system's own violations are health-based (19 of 56), and it ranks #21,077 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
56 Around the middle fewer violations than 40% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Oregon County PWSD 1
19 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MO4024432.
Sources: EPA SDWIS · Missouri DNR, Public Drinking Water Branch
Nationwide peers
56 violations · 900 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Oregon County PWSD 1
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Missouri compares on the same EPA violation measures. Missouri systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.